Peter Koch wrote:
...
Unfortunately the login-process uses some sort of challenge-response
mechanism (GET CHALLENGE command followed by EXTERNAL AUTH)
So far I have absolutely no idea how to compute the response from
a given challenge. I do know where the certs and keys are, and I do
know all APDUs that are necessary. So the response-computation
is the only missing information.

for this you need to extract the secret key used for the MAC
generation (I assume a symmetric key is used here) from the
library ;-) The rest shouldn't be too difficult (although opensc
doesn't really support the various EXT. AUTHENTICATE variants
at the moment).
Getting the key could be the fun part. Btw: it is a windows or
linux binary ?

Cheers,
Nils
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